summaryrefslogtreecommitdiffstats
path: root/qemu/stubs/vm-stop.c
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/stubs/vm-stop.c')
-rw-r--r--qemu/stubs/vm-stop.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/qemu/stubs/vm-stop.c b/qemu/stubs/vm-stop.c
index 69fd86b2e..8271cad65 100644
--- a/qemu/stubs/vm-stop.c
+++ b/qemu/stubs/vm-stop.c
@@ -1,3 +1,4 @@
+#include "qemu/osdep.h"
#include "qemu-common.h"
#include "sysemu/sysemu.h"
7 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 
/*
 * QEMU I/O channels watch helper APIs
 *
 * Copyright (c) 2015 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "qemu/osdep.h"
#include "io/channel-watch.h"

typedef struct QIOChannelFDSource QIOChannelFDSource;
struct QIOChannelFDSource {
    GSource parent;
    GPollFD fd;
    QIOChannel *ioc;
    GIOCondition condition;
};


#ifdef CONFIG_WIN32
typedef struct QIOChannelSocketSource QIOChannelSocketSource;
struct QIOChannelSocketSource {
    GSource parent;
    GPollFD fd;
    QIOChannel *ioc;
    SOCKET socket;
    int revents;
    GIOCondition condition;
};

#endif


typedef struct QIOChannelFDPairSource QIOChannelFDPairSource;
struct QIOChannelFDPairSource {
    GSource parent;
    GPollFD fdread;
    GPollFD fdwrite;
    QIOChannel *ioc;
    GIOCondition condition;
};


static gboolean
qio_channel_fd_source_prepare(GSource *source G_GNUC_UNUSED,
                              gint *timeout)
{
    *timeout = -1;

    return FALSE;
}


static gboolean
qio_channel_fd_source_check(GSource *source)
{
    QIOChannelFDSource *ssource = (QIOChannelFDSource *)source;

    return ssource->fd.revents & ssource->condition;
}


static gboolean
qio_channel_fd_source_dispatch(GSource *source,
                               GSourceFunc callback,
                               gpointer user_data)
{
    QIOChannelFunc func = (QIOChannelFunc)callback;
    QIOChannelFDSource *ssource = (QIOChannelFDSource *)source;

    return (*func)(ssource->ioc,
                   ssource->fd.revents & ssource->condition,
                   user_data);
}


static void
qio_channel_fd_source_finalize(GSource *source)
{
    QIOChannelFDSource *ssource = (QIOChannelFDSource *)source;

    object_unref(OBJECT(ssource->ioc));
}


#ifdef CONFIG_WIN32
static gboolean
qio_channel_socket_source_prepare(GSource *source G_GNUC_UNUSED,
                                  gint *timeout)
{
    *timeout = -1;

    return FALSE;
}


/*
 * NB, this impl only works when the socket is in non-blocking
 * mode on Win32
 */
static gboolean
qio_channel_socket_source_check(GSource *source)
{
    static struct timeval tv0;

    QIOChannelSocketSource *ssource = (QIOChannelSocketSource *)source;
    WSANETWORKEVENTS ev;
    fd_set rfds, wfds, xfds;

    if (!ssource->condition) {
        return 0;
    }

    WSAEnumNetworkEvents(ssource->socket, ssource->ioc->event, &ev);

    FD_ZERO(&rfds);
    FD_ZERO(&wfds);
    FD_ZERO(&xfds);
    if (ssource->condition & G_IO_IN) {
        FD_SET((SOCKET)ssource->socket, &rfds);
    }
    if (ssource->condition & G_IO_OUT) {
        FD_SET((SOCKET)ssource->socket, &wfds);
    }
    if (ssource->condition & G_IO_PRI) {
        FD_SET((SOCKET)ssource->socket, &xfds);
    }
    ssource->revents = 0;
    if (select(0, &rfds, &wfds, &xfds, &tv0) == 0) {
        return 0;
    }

    if (FD_ISSET(ssource->socket, &rfds)) {
        ssource->revents |= G_IO_IN;
    }
    if (FD_ISSET(ssource->socket, &wfds)) {
        ssource->revents |= G_IO_OUT;
    }
    if (FD_ISSET(ssource->socket, &xfds)) {
        ssource->revents |= G_IO_PRI;
    }

    return ssource->revents;
}


static gboolean
qio_channel_socket_source_dispatch(GSource *source,
                                   GSourceFunc callback,
                                   gpointer user_data)
{
    QIOChannelFunc func = (QIOChannelFunc)callback;
    QIOChannelSocketSource *ssource = (QIOChannelSocketSource *)source;

    return (*func)(ssource->ioc, ssource->revents, user_data);
}


static void
qio_channel_socket_source_finalize(GSource *source)
{
    QIOChannelSocketSource *ssource = (QIOChannelSocketSource *)source;

    object_unref(OBJECT(ssource->ioc));
}


GSourceFuncs qio_channel_socket_source_funcs = {
    qio_channel_socket_source_prepare,
    qio_channel_socket_source_check,
    qio_channel_socket_source_dispatch,
    qio_channel_socket_source_finalize
};
#endif


static gboolean
qio_channel_fd_pair_source_prepare(GSource *source G_GNUC_UNUSED,
                                   gint *timeout)
{
    *timeout = -1;

    return FALSE;
}


static gboolean
qio_channel_fd_pair_source_check(GSource *source)
{
    QIOChannelFDPairSource *ssource = (QIOChannelFDPairSource *)source;
    GIOCondition poll_condition = ssource->fdread.revents |
        ssource->fdwrite.revents;

    return poll_condition & ssource->condition;
}


static gboolean
qio_channel_fd_pair_source_dispatch(GSource *source,
                                    GSourceFunc callback,
                                    gpointer user_data)
{
    QIOChannelFunc func = (QIOChannelFunc)callback;
    QIOChannelFDPairSource *ssource = (QIOChannelFDPairSource *)source;
    GIOCondition poll_condition = ssource->fdread.revents |
        ssource->fdwrite.revents;

    return (*func)(ssource->ioc,
                   poll_condition & ssource->condition,
                   user_data);
}


static void
qio_channel_fd_pair_source_finalize(GSource *source)
{
    QIOChannelFDPairSource *ssource = (QIOChannelFDPairSource *)source;

    object_unref(OBJECT(ssource->ioc));
}


GSourceFuncs qio_channel_fd_source_funcs = {
    qio_channel_fd_source_prepare,
    qio_channel_fd_source_check,
    qio_channel_fd_source_dispatch,
    qio_channel_fd_source_finalize
};


GSourceFuncs qio_channel_fd_pair_source_funcs = {
    qio_channel_fd_pair_source_prepare,
    qio_channel_fd_pair_source_check,
    qio_channel_fd_pair_source_dispatch,
    qio_channel_fd_pair_source_finalize
};


GSource *qio_channel_create_fd_watch(QIOChannel *ioc,
                                     int fd,
                                     GIOCondition condition)
{
    GSource *source;
    QIOChannelFDSource *ssource;

    source = g_source_new(&qio_channel_fd_source_funcs,
                          sizeof(QIOChannelFDSource));
    ssource = (QIOChannelFDSource *)source;

    ssource->ioc = ioc;
    object_ref(OBJECT(ioc));

    ssource->condition = condition;

#ifdef CONFIG_WIN32
    ssource->fd.fd = (gint64)_get_osfhandle(fd);
#else
    ssource->fd.fd = fd;
#endif
    ssource->fd.events = condition;

    g_source_add_poll(source, &ssource->fd);

    return source;
}

#ifdef CONFIG_WIN32
GSource *qio_channel_create_socket_watch(QIOChannel *ioc,
                                         int socket,
                                         GIOCondition condition)
{
    GSource *source;
    QIOChannelSocketSource *ssource;

    source = g_source_new(&qio_channel_socket_source_funcs,
                          sizeof(QIOChannelSocketSource));
    ssource = (QIOChannelSocketSource *)source;

    ssource->ioc = ioc;
    object_ref(OBJECT(ioc));

    ssource->condition = condition;
    ssource->socket = socket;
    ssource->revents = 0;

    ssource->fd.fd = (gintptr)ioc->event;
    ssource->fd.events = G_IO_IN;

    g_source_add_poll(source, &ssource->fd);

    return source;
}
#else
GSource *qio_channel_create_socket_watch(QIOChannel *ioc,
                                         int socket,
                                         GIOCondition condition)
{
    return qio_channel_create_fd_watch(ioc, socket, condition);
}
#endif

GSource *qio_channel_create_fd_pair_watch(QIOChannel *ioc,
                                          int fdread,
                                          int fdwrite,
                                          GIOCondition condition)
{
    GSource *source;
    QIOChannelFDPairSource *ssource;

    source = g_source_new(&qio_channel_fd_pair_source_funcs,
                          sizeof(QIOChannelFDPairSource));
    ssource = (QIOChannelFDPairSource *)source;

    ssource->ioc = ioc;
    object_ref(OBJECT(ioc));

    ssource->condition = condition;

#ifdef CONFIG_WIN32
    ssource->fdread.fd = (gint64)_get_osfhandle(fdread);
    ssource->fdwrite.fd = (gint64)_get_osfhandle(fdwrite);
#else
    ssource->fdread.fd = fdread;
    ssource->fdwrite.fd = fdwrite;
#endif

    ssource->fdread.events = condition & G_IO_IN;
    ssource->fdwrite.events = condition & G_IO_OUT;

    g_source_add_poll(source, &ssource->fdread);
    g_source_add_poll(source, &ssource->fdwrite);

    return source;
}